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High Temp Metal Bellows Seals

    High Temp Metal Bellows

  • A narrow cross sectional design allows use in a wide range of pumps without pump modification

  • No Springs to clog !!!!!

  • Metal Bellows seals seal with Flexible Graphite instead of a rubber boot or o-ring allowing it to be used applications over 500 degrees F.

  • High strength bellows ideal for demanding applications

Metal Bellows Seal Cross Sectional Drawing
Seal Dash Number A(in.) 0.000 -0.002 A(mm) 0.000 -0.051 B(inch) REF C(inch) REF D(inch) REF E(inch) ±.76 F(inch) REF G(inch) REF
-16 1" 25.4 1.72" 1.66" 2.11" 1.44" 1.24" .188"
-18 1.125" 28.58 1.85" 1.69" 2.13" 1.56" 1.36" 188"
-20 1.25" 31.75 1.98" 1.72" 2.16" 1.72" 1.52" 188"
-22 1.375" 34.93 2.11" 1.72" 2.16" 1.8" 1.64" 188"
-24 1.5" 38.1 2.24" 1.72" 2.16" 1.97" 1.72" 188"
-26 1.625" 41.28 2.36" 1.72" 2.16" 2.09" 1.84" 188"
-28 1.75" 44.45 2.49" 1.75" 2.2" 2.22" 1.97" 188"
-30 1.875" 47.63 2.61" 1.75" 2.2" 2.34" 2.09" 188"
-32 2" 50.8 2.74" 1.78" 2.23" 2.47" 2.22" 188"
-34 2.125" 53.98 2.87" 1.81" 2.26" 2.59" 2.34" 188"
-36 2.25" 57.15 2.99" 1.81" 2.26" 2.72" 2.47" 188"
-38 2.375" 60.33 3.11" 1.84" 2.29" 2.85" 2.60" 188"
-40 2.5" 63.5 3.24" 1.88" 2.38" 3.1" 2.8" 188"
-42 2.625" 66.68 3.39" 1.91" 2.41" 3.22" 2.92" 188"
-44 2.75" 69.85 3.51" 1.94" 2.45" 3.35" 3.05" 188"
-46 2.875" 73.03 3.7" 2.03" 2.54" 3.5" 3.2" 188"
-48 3" 76.2 3.82" 2.03" 2.54" 3.63" 3.33" 188"
-50 3.125" 79.38 4.01" 2.03" 2.57" 3.77" 3.44" 188"
-52 3.25" 82.55 4.13" 2.03" 2.57" 3.9" 3.57" 188"
-54 3.375" 85.73 4.26" 2.03" 2.57" 4.02" 3.69" 188"
-56 3.5" 88.9 4.38" 2.03" 2.57" 4.15" 3.82" 188"
-58 3.625" 92.08 4.51" 2.03" 2.57" 4.27" 3.94" 188"
-60 3.75" 95.25 4.64" 2.03" 2.57" 4.4" 4.07" 188"
-62 3.875" 98.43 4.76" 2.03" 2.57" 4.52" 4.19" 188"
-64 4" 101.6 4.89" 2.03" 2.57" 4.65" 4.32" 188"

High temperature metal bellows seals are possible through the use of flexible graphite or Grafoil® flexible graphite.  We offer both. Besides being built with a more durable double ply, flexible graphite is used in place of an o-ring. Because flexible graphite by nature does not have elastomeric recovery a back collar is employed which is tightened to cause radial compression on the pump shaft, sealing it tight.

The temperature range metal bellows seals is always limited to the ability of the secondary elements.  Flexible graphite is generally good to 850 F.  However if the atmosphere the seal is running in contains less oxygen than breathable air, the point of carbonization is raised.   In steam flexible graphite and hence metal bellows seals with flexible graphite are good for 1200 F. 

A  basic characteristic of flexible graphite is it's 0 - 14 ph range.  If you require an extra durable chemical seal the seal designed for high temperatures is ideal.

We can offer welded metal seals that will last longer in the field resulting in less pump down time, less loss production and fewer labor costs, saving you incalculably.

Manufactured under an ISO-90001 system, maintaining the quality of the materials, and workmanship. 

 

 



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© 2008 American Seal & Packing, Inc.
GRAFOIL® is a registered trademark of GrafTech International Holdings Inc.
Viton® is a registered trademark of DuPont Performance Elastomers.
Kalrez® is a registered trademark of DuPont Performance Elastomers.
GFO® is a registered trademark of W.L. Gore and Associates
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American Seal & Packing, Inc., Santa Ana, CA. 92705 •  714-593-9780